COLOMBOS v2.0: an ever expanding collection of bacterial expression compendia. - Pieter Meysman; Paolo Sonego; Luca Bianco; Qiang Fu 009; Daniela Ledezma-Tejeida; Socorro Gama-Castro; Veerle Liebens; Jan Michiels; Kris Laukens; Kathleen Marchal; Julio Collado-Vides; Kristof Engelen (Nucleic Acids Res., 2014)